code: def test_show_multiple(tmp_dir, dvc):
      tmp_dir.gen("params.yaml", "foo: bar\nbaz: qux\n")
      dvc.run(
          cmd="echo params.yaml", params=["foo"], name="echo-params1"
      )
      dvc.run(
          cmd="echo params.yaml", params=["baz"], name="echo-params2"
      )
      assert dvc.params.show() == {
          "": {
              "data": {
                  "params.yaml": {"data": {"baz": "qux", "foo": "bar"}}
              }
          }
      }
  
file_path: dvc/tests/func/params/test_show.py
imports: from os.path import join
  import pytest
  from dvc.repo import Repo
  from dvc.repo.stage import PROJECT_FILE
label_desc: Use image node_id 6 for calling a global function with example usage: test_show_multiple(tmp_dir, dvc) without return types